createobjectdemo.java

java tutorial.sun公司官方出品。java入门书籍。最新版

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public class CreateObjectDemo {

    public static void main(String[] args) {
		
        //Declare and create a point object
        //and two rectangle objects.
        Point originOne = new Point(23, 94);
        Rectangle rectOne = new Rectangle(originOne, 100, 200);
        Rectangle rectTwo = new Rectangle(50, 100);
		
        //display rectOne's width, height, and area
        System.out.println("Width of rectOne: " +
                rectOne.width);
        System.out.println("Height of rectOne: " +
                rectOne.height);
        System.out.println("Area of rectOne: " + rectOne.getArea());
		
        //set rectTwo's position
        rectTwo.origin = originOne;
		
        //display rectTwo's position
        System.out.println("X Position of rectTwo: "
                + rectTwo.origin.x);
        System.out.println("Y Position of rectTwo: "
                + rectTwo.origin.y);
		
        //move rectTwo and display its new position
        rectTwo.move(40, 72);
        System.out.println("X Position of rectTwo: "
                + rectTwo.origin.x);
        System.out.println("Y Position of rectTwo: "
                + rectTwo.origin.y);
    }
}